Fibreheart ABS-GF Premium Glass Fiber 3D Printer Filament - 93°C Heat Resistance, High Durability, Precision Printing - for Automotive & Industrial Applications (1kg, Black)

Ran this ABS-GF on my Bambu Lab P1S and it’s been solid from the start. Extrudes clean with no hiccups, and prints come out consistent every time. The strength is noticeable compared to standard ABS—great for parts that actually need to hold up. Surface finish is clean, layers bond well, and I didn’t have to fight it to get good results. If you’re looking for a durable, high-quality filament that just works, this is it.

This was my first run with Siraya Tech’s ABS‑GF (glass‑fiber reinforced ABS), and I approached it the same way I did with ASA: prep first, print second. I dried the filament overnight, then spent time dialing in my slicer profile. That effort was worth it—the prints came out strong and clean. You have to print in an enclosure to make this work. Adhesion was solid using a PEI sheet with a light application of bed adhesive, and release was easy once cooled. The filament flows consistently, and with proper calibration, it produces parts with excellent dimensional accuracy. For testing, I printed structural rocket components, including couplers and centering rings. The results were impressive: the glass‑fiber reinforcement adds noticeable stiffness, making it well‑suited for load‑bearing parts in high‑power rocketry. The finish is black but not glossy, more of a matte look with a subtle texture from the fibers. I also noticed the odor during printing was less than the ASA I’ve used, which made the overall experience more pleasant. Bottom line: With proper prep, Siraya Tech ABS‑GF delivers strong, reliable prints that excel in structural applications. Great choice for hobbyists who need durability beyond PLA and PETG, especially for rocket parts.

I can’t say enough good things about siraya tech’s filament. This ABS-GF has printed excellent for me with 0.4mm nozzle using the Orca Slicer profile that Siraya tech provides on their website for my Qidi plus 4. Very first prints came out perfect. I have also used their CF-PET with great results but the ABS is a more affordable option with high temperature resistance and great layer adhesion and strength. I have not yet experienced any warping or stringing or anything really. Even longer bridges and overhangs come out great as you can see from my photos printed without supports. I have left this abs-gf out in the open in my 40% humidified home for a few weeks and I have still not had issues with moisture. My PETG on the other hand would be extremely stringy by now. The ABS-GF does have a bit of ABS smell for sure but it’s not as strong as some others i’ve tried in the past. This might be my new go-to filament instead of PLA. The surface is slightly abrasive, not quite as much as the PET-CF but the parts look almost identical. I noticed more skin irritation with the PET-CF. This ABS-GF does not seem to bother my skin at all really unless i’m cutting or sanding on it. The ABS GF is still quite flexible like regular ABS but a little less, since it’s only 10% glass but that also means better layer adhesion and less abrasive surfaces. I think the flexibility is close to PLA, but the filament itself is still pretty brittle. The PET-CF is a LOT more stiff and also more brittle but INCREDIBLY strong. The CF-PET, for example, I had a thing piece of support material maybe one or two walls thick, and when trying to bend it, it was incredibly strong. When it finally broke it exploded and have my finger a little cut. I hope to see more colors come out in the future. I would love an ABS-GF in Purple.

Filament arrived in good condition and sealed. I still dried it as I do ALL my filament. Printing with great results and very good finish appearance. Overhangs require slowing down and some part cooling fan. I've had no issues with bed adhesion on standard textured PEI build plates at 90°. No issues with warping in my enclosed X1C machines with the chamber temp staying around 42°-44°. Printing with a 0.4mm hardened nozzle and no clogging. No scientific testing but the finished prints seem to be very strong and durable. This is my new goto filament for ABS-GF.

I did my first prints with this filament yesterday. I first dried it for 8 hours like I do with most filaments and then it was print time. I was concerned when I broke the filament end off immediately when just trying to load the filament but after getting it loaded and the printer fired up, it printed amazingly smooth with no issue or fuss. I printed the first layer at 265/105 nozzle/bed temp and then 260/100. I did apply a little hairspray first but I am pretty sure it was unnecessary. The supports broke off perfectly even for a tiny little screw hole and the parts came off the bed with no fuss. There was no warping or stringing at all on any of the 3 prints I did, one taking 6 hours and being larger and then a tiny raspberry pi camera unit case and mount. This is now my favorite ABS filament, not just my favorite reinforced filament.

The filament is great, prints easy, no warping, parts came out really nice, dimensionally very accurate. however I have two issues 1. The filament is filled all the way out in the spool so it doesn't fit in the AMS, after using about 1/4 of the filament the spool gets smaller and thus can fit in the AMS. 2. Siraya provide a 3mf file with the print profile, they don't provide the print profile by itself. Like why? I have to manually load the file then delete the part then load my part.

I have used Siraya Tech Fibreheart ABS-GF filaments and the black and grey are exceptional. Both of these have consistently given me great results and go down clean and easy for first layers every time. The white variant has given me trouble with every print I have tried, though. Not sure what the deal is there.

I create firearm products using ABS-GF filament, primarily Bambu ABS-GF, due to its impressive strength and durability. In product testing, I’ve even run parts over with a car, and they show little to no compromise. Compared to PETG-CF, ABS-GF offers significantly greater strength. Before anyone attributes this to print settings or machine quality, let me clarify: my Ender 3 days are long behind me. I now operate a Bambu X1 Carbon with settings meticulously optimized for production. Additionally, I perform detailed tuning for all filaments before using them, whether for commercial or personal projects. When Bambu ABS-GF was out of stock, I tried Siraya Tech's ABS-GF filament in black as an alternative. While the print quality is comparable to Bambu's, the strength is disappointing. Parts printed with Siraya Tech filament snap with minimal effort—almost like a dry twig. In contrast, Bambu's filament takes significant force to break, often requiring a real struggle by hand. This weakness is also apparent during automated material switching (AMS), where Siraya Tech’s filament snaps whereas Bambu’s filament has never snapped. If returns were an option, I wouldn’t hesitate. For anyone seeking a filament with robust shear strength, this product isn’t for you. If the shoe were on the other foot, I would leave Bambu labs the same review. However, this stuff is very weak. I expect my prints to be both visually appealing and exceptionally strong, but unfortunately, Siraya Tech's ABS-GF fails to meet the mark.

Siraya Tech manufactures some seriously good filaments. I printed a 3d printer lid riser using this stuff with a (hardened) 0,4mm nozzle. Three days of printing with 1.2Kg of filament used. Not a single clog! I was prepared to change over to 0,6mm nozzle for the project but was afraid of getting dimensional inaccuracies. I'll definitely buy more later. The density is very low compared to for example PLA and this results in every 1Kg roll having lots of extra meters to print with. Thiings to watch for (not the obvious ABS related stuff). The end of the filament was attached to the bottom with some tape. A piece of tape in a Bowden tube isn't fun. The filament is really brittle and it's best to be printed out directly from a dryer. This will soften the filament and it will not break as a result during the print. 65°C wasn't enough in the bottom of the roll but bumping the heat to 70°C made the low diameter bottom roll filament printable. Do not exceed 70°C temp in a dryer! I used the high temp only with the filament bent to near core diameter, not during the whole 16h task. It comes curved and the curve angle gets tighter coming near the core. Just a free little hint. :)

Utilizzato su Bambu X1C con piatto BIQU CryoGrip Pro Glacier: nessuna deformazione e adesione impeccabile. La stampa è risultata stabile e precisa fin dal primo layer. Ho usato il profilo consigliato disponibile sul sito Siraya Tech, e ha funzionato alla perfezione. Consigliatissimo!

My favourite and go to ABS-GF filament. Well priced and fast delivery.

Prints really well with the settings provided

Arrived well packaged and prints beautifully. Strong and light weight. I’m printing this Filament on the Qidi Q2, at relatively high speeds. In my case I found that I need to print at around 280°c for better layer adhesion. With the bed at 90° and chamber set to 35° I’ve seen no warping or cracks whatsoever. Prints as easy as PLA in my experience! Hands down my new favourite filament. Looking forward to trying other colors.